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authorJan Glauber <jang@linux.vnet.ibm.com>2011-03-15 17:08:22 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-03-15 17:08:23 +0100
commit305b1523250faf9675919def94906775992ce52d (patch)
tree2dcbe253cf463eca3c0dfcc9ee8ac7b97cfa5021 /arch/s390/Kconfig.debug
parentd54cddb620fa493968111f479029dcd910fcb921 (diff)
downloadvexpress-lsk-305b1523250faf9675919def94906775992ce52d.tar.gz
[S390] Write protect module text and RO data
Implement write protection for kernel modules text and read-only data sections by implementing set_memory_[ro|rw] on s390. Since s390 has no execute bit in the pte's NX is not supported. set_memory_[ro|rw] will only work on normal pages and not on large pages, so in case a large page should be modified bail out with a warning. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig.debug')
-rw-r--r--arch/s390/Kconfig.debug3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug
index 2b380df9560..d76cef3fef3 100644
--- a/arch/s390/Kconfig.debug
+++ b/arch/s390/Kconfig.debug
@@ -31,4 +31,7 @@ config DEBUG_STRICT_USER_COPY_CHECKS
If unsure, or if you run an older (pre 4.4) gcc, say N.
+config DEBUG_SET_MODULE_RONX
+ def_bool y
+ depends on MODULES
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